CloverBootloader/MemoryFix/OsxAptioFixDrv/AsmFuncs.h

44 lines
1.3 KiB
C
Raw Normal View History

/**
Some assembler helper functions plus boot.efi kernel jump callback
by dmazar
**/
#include <Library/BaseLib.h>
/** Read stack pointer. */
UINT64 EFIAPI MyAsmReadSp(VOID);
/** Save 64 bit state that will be restored on callback. */
VOID EFIAPI MyAsmPrepareJumpFromKernel(VOID);
/** Start and end address of the 32 and 64 bit code
that is copied to kernel entry address to jump back
to our code, to MyAsmJumpFromKernel().
*/
extern UINT8 MyAsmEntryPatchCode;
extern UINT8 MyAsmEntryPatchCodeEnd;
/** Callback function, 32 and 64 bit, that is called when boot.efi jumps to kernel address. */
VOID EFIAPI MyAsmJumpFromKernel(VOID);
/** 32 bit function start and end that copies kernel to proper mem and jumps to kernel. */
extern UINT8 MyAsmCopyAndJumpToKernel;
extern UINT8 MyAsmCopyAndJumpToKernel32;
extern UINT8 MyAsmCopyAndJumpToKernel64;
extern UINT8 MyAsmCopyAndJumpToKernelEnd;
extern UINTN SavedCR3;
extern IA32_DESCRIPTOR SavedGDTR;
extern IA32_DESCRIPTOR SavedIDTR;
extern UINT64 AsmKernelEntry;
extern UINT64 AsmKernelImageStartReloc;
extern UINT64 AsmKernelImageStart;
extern UINT64 AsmKernelImageSize;
extern UINT64 MyAsmCopyAndJumpToKernel32Addr;
extern UINT64 MyAsmCopyAndJumpToKernel64Addr;